Malicious PDF — malware analysis report

Static analysis result for SHA-256 3175b0bc504153fe…

MALICIOUS

PDF

75.3 KB Created: 2021-02-25 19:46:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a4e3b56b9389edeabcc44357f1fe84f1 SHA-1: 1ec22687fc0947f44db59ded039507f651747087 SHA-256: 3175b0bc504153fe44fd06636bb4bb8f8dba6882296e587f3cdc8e0d77f7caee
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://maypoin.ru/award?keyword=the+wave+painting+japanese PDF link annotation
    • https://cdn.sqhk.co/dufubimaru/gjgg9PQ/75998993972.pdfIn PDF document text
    • http://hookup671.site/how_to_say_medical_assistant_in_spanishi6b8c.pdfIn PDF document text
    • http://mexicotop3.xyz/44244319671zsyjd.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/jigjahd/extreme_car_racing_nitro_3d.pdfIn PDF document text
    • https://vesumuzuvof.weebly.com/uploads/1/3/4/6/134685641/844125.pdfIn PDF document text
    • https://polabobaxadujo.weebly.com/uploads/1/3/4/7/134775235/3325360.pdfIn PDF document text
    • https://cdn.sqhk.co/simizekovogi/heLzjgK/city_by_the_sea_movie_online_free.pdfIn PDF document text
    • http://bixaxivajujojar.mypressonline.com/12881846962.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/gdqKhaF/raft_survival_simulator_mac.pdfIn PDF document text
    • http://frukt.fun/army_mft_exam_2_answerseawzb.pdfIn PDF document text
    • http://faripofijukevom.mywebcommunity.org/dirt_devil_power_express_upright_bagless_vacuum_reviews.pdfIn PDF document text
    • https://wumigativagulam.weebly.com/uploads/1/3/1/6/131637174/5424355.pdfIn PDF document text
    • https://cdn.sqhk.co/masunidupag/Uh7tcnT/dip_nails_near_me_cheap.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/sun_tzu_larte_della_guerra_audiolibro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/kgb_archiver_pc_setup.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC26 5132 bytes
SHA-256: 91c5757760569c37766589ba6e9a9b72b934be5a1eb8007dcdb9a7a61d086100
font_01_sfnt_off0000fdbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBE 10192 bytes
SHA-256: 477f6a7f745da843e289481e86364d948095dd9c603f85994bc222bd1bf53f29